[1]彭振宇..不同热边界条件下热管对沥青混凝土换热特性的影响[J].郑州大学学报(工学版),2012,33(06):121-124.[doi:10.3969/j.issn.1671-6833.2012.06.029]
　Peng Zhenyu.Influence of Heat Pipe on Heat Transfer Characteristics of Asphalt Concreteunder Different Thermal Boundary Conditions[J].Journal of Zhengzhou University (Engineering Science),2012,33(06):121-124.[doi:10.3969/j.issn.1671-6833.2012.06.029]
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不同热边界条件下热管对沥青混凝土换热特性的影响()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33
期数:
2012年06期
页码:
121-124
栏目:
出版日期:
2012-11-10

文章信息/Info

Title:
Influence of Heat Pipe on Heat Transfer Characteristics of Asphalt Concreteunder Different Thermal Boundary Conditions
作者:
彭振宇.
山西省交通科学研究院,山西太原,030006
Author(s):
Peng Zhenyu
Shanxi Transportation Research Institute, Taiyuan 030006 , China
关键词:
沥青混凝土;  热管;  数值模拟;  边界条件;  换热特性
Keywords:
asphalt eonerete;  heat pipe;  numerical simulation;  boundary condition;  heat transfer characteristics
分类号:
TU528.4
DOI:
10.3969/j.issn.1671-6833.2012.06.029
摘要:
沥青混凝土在阳光的照射下会迅速升温,影响路面的高温稳定性.热管是一种理想的散热、均热和热能输送元件,可有效降低路面内的升温速率.采用数值模拟方法,建立了沥青混凝土的三维模型,考虑了有、无热管两种情况,对距路面不同深度位置的温度-时间响应特性进行了计算,并分析了路面吸热和放热两种不同热边界条件对换热特性的影响.计算结果表明,在加热过程中,热管会显著降低路表温度,最高降温幅度可达9℃,而且会阻止热量进一步向深层传递；在冷却过程中,热管会加快路表冷却,同时使其周围温度保持较好的均匀度,有助于减小内部应力,提高路面稳定性.
Abstract:
The temperature of asphalt pavement rises rapidly in the strong sunlight. It will cause troubles tothe thermal stability of the pavement, Heat pipe is a kind of ideal apparatus to transfer heat and maintain uni.form temperature distribution, and it will effectively reduce the rising speed of asphalt pavement temperature.Three-dimensional models of asphalt concrete are established based on numerical simulation method, and conditions of with and without heat pipe are considered, The temperature to time response characteristies at differ.ent depths of the concrete are studied, when the surface of the conerete is conducted in heating or cooling.The calculation results show that, the temperature of conerete surface is reduced distinctly by the heat pipe inthe heating process, ’The maximal temperature decrease is 9℃ . Counteracted by the heat pipe, heat is difficultto be conducted to deep region beneath the heat pipe. The cooling speed of concrete surface is accelerated byheat pipe in the cooling process , and the temperature distribution around heat pipe is more uniform than that ofother regions. It is helpful to reduce internal stress and maintain structure stability for the pavement.

相似文献/References:

[1]方书起,郭俊,王睿宇..热管式吸收器传热传质的实验研究[J].郑州大学学报(工学版),2012,33(03):99.[doi:10.3969/j.issn.1671-6833.2012.03.025]
　FANG Shuqi,GUO Jun,WANG Ruiyu.Experimental Study on Heat and Mass Transfer in Heat Pipe-Type Absorber[J].Journal of Zhengzhou University (Engineering Science),2012,33(06):99.[doi:10.3969/j.issn.1671-6833.2012.03.025]

更新日期/Last Update: 1900-01-01